Kana is lonely because she can't have sex even though it's the weekend because her husband is on a business trip, while her son is always at home even though it's his day off. Kana, who had no dating experience and was worried about Tish's friend's son, decided to do ``sexual training in the name of sex education''! Stop it~ My son suddenly pulls down his pants and resists, but he can't resist the pleasure of the blowjob he experiences for the first time...The unusual stimulation of the raw sex, which is too strong for a virgin, makes him almost cum. However, Kana, who wants to relieve her own frustration, is having a hard time making her cum. Don't cum yet! Her son's cock, which expands and becomes harder and harder due to repeated stops, gives her mother unprecedented pleasure.